There are concerns that antibiotic treatment might reduce levels of vitamin K in the body. However, this effect seems to be slight, and only significant, if at all, in individuals who are already considerably deficient in vitamin K.
3–6

Revision Information

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.